TSMB-J04 Metal Bellows Seal(replace John crane 604 )
TSMB-J04(TS 604)
The TSMB‑J04 is a high-performance stationary metal bellows mechanical seal engineered to replace the John Crane Type 604. Manufactured by Trisun, this ISO‑certified seal combines robust construction with versatile material options for both bellows and sealing faces. It is capable of operating across a wide temperature range—from –75 °C to +425 °C—and supports both single‑ply and double‑ply bellows, providing pressure ratings up to 6.9 MPa. Ideal for process pumps handling hot hydrocarbons, aqueous solutions, crude fractionates, and heat-transfer fluids, it is designed for shaft speeds up to 25 m/s, offering a durable, elastomer‑free sealing solution for industrial environments.
|
Parameter |
Specification |
|
Model |
TSMB‑J04 (compatible with John Crane 604) |
|
Bellows Type |
Single-ply (≤2 MPa); Double-ply (≤6.9 MPa) |
|
Pressure Range |
Single‑ply ≤2 MPa / Double‑ply ≤6.9 MPa |
|
Temperature Range |
–75 °C to +425 °C |
|
Max. Shaft Speed |
≤25 m/s |
|
Rotary Ring Materials |
SiC, Carbon, Tungsten Carbide (TC) |
|
Stationary Ring Materials |
SiC, Carbon |
|
Secondary Seal |
Flexible Carbon |
|
Bellows Materials |
SUS316L, AM350, Inconel 718, Titanium, Hastelloy‑C, Alloy‑20 |
|
Other Components |
SUS304/SUS316, Titanium, Hastelloy‑C |
|
Shaft Size Range |
25 mm to 100 mm (1″ to 3.875″)–various detailed dimensions available |
|
Shaft |
d |
d 1 |
l 1 |
l 2 |
|
1.000 |
1.000 |
1.937 |
1.969 |
1.138 |
|
1.125 |
1.125 |
2.062 |
1.969 |
1.138 |
|
1.250 |
1.250 |
2.187 |
1.969 |
1.138 |
|
1.375 |
1.375 |
2.312 |
1.938 |
1.138 |
|
1.500 |
1.500 |
2.562 |
2.063 |
1.191 |
|
1.625 |
1.625 |
2,562 |
2.060 |
1.222 |
|
1.750 |
1.750 |
2.687 |
2.060 |
1.254 |
|
1.875 |
1.875 |
2.812 |
2.062 |
1.254 |
|
2.000 |
2.000 |
2.937 |
2.060 |
1.285 |
|
2.125 |
2.125 |
3.187 |
2.182 |
1.316 |
|
2.250 |
2.250 |
3.312 |
2.218 |
1.384 |
|
2.375 |
2.375 |
3.437 |
2.186 |
1.379 |
|
2.500 |
2.500 |
3.562 |
2.184 |
1.410 |
|
2.625 |
2.625 |
3.687 |
2.250 |
1.443 |
|
2.750 |
2.750 |
3.937 |
2.250 |
1.608 |
|
2.875 |
2.875 |
4.062 |
2.281 |
1.608 |
|
3.000 |
3.000 |
4.187 |
2.250 |
1.608 |
|
3.125 |
3.125 |
4.312 |
2.250 |
1.608 |
|
3.250 |
3.250 |
4.437 |
2.219 |
1.608 |
|
3.375 |
3.375 |
4.562 |
2.282 |
1.608 |
|
3.500 |
3.500 |
4.687 |
2.373 |
1.650 |
|
3.625 |
3.625 |
4.812 |
2.375 |
1.650 |
|
3.750 |
3.750 |
4.937 |
2.375 |
1.650 |
|
3.875 |
3.875 |
5.062 |
2.375 |
1.650 |
|
Shaft |
d |
d 1 |
l 1 |
l 2 |
|
25.00 |
25 |
49.20 |
50.0*1 |
28.91 |
|
30.00 |
30 |
52.37 |
50.01 |
28.91 |
|
32.00 |
32 |
55.55 |
50.01 |
28.91 |
|
35.00 |
35 |
58.72 |
49.23 |
28.91 |
|
38.00 |
38 |
65.07 |
52.40 |
30.25 |
|
40.00 |
40 |
65.07 |
52.32 |
31.04 |
|
45.00 |
45 |
68.25 |
52.32 |
31.85 |
|
48.00 |
48 |
71.42 |
52.37 |
31.85 |
|
50.00 |
50 |
74.60 |
52.32 |
32.64 |
|
55.00 |
55 |
80.95 |
55.42 |
33.43 |
|
60.00 |
60 |
87.30 |
55.52 |
35.03 |
|
65.00 |
65 |
90.47 |
55.47 |
35.81 |
|
70.00 |
70 |
100.00 |
57.15 |
40.84 |
|
75.00 |
75 |
106.35 |
57.15 |
40.84 |
|
80.00 |
80 |
109.52 |
57.15 |
40.84 |
|
85.00 |
85 |
115.87 |
57.96 |
40.84 |
|
90.00 |
90 |
119.05 |
60.27 |
41.91 |
|
95.00 |
95 |
125.40 |
60.33 |
41.91 |
|
100.00 |
100 |
128.57 |
60.33 |
41.91 |
TRISUN’s metal bellows seal solutions are designed to meet the highest industry standards, providing exceptional durability and performance in demanding applications. These seals feature edge welded welded metal bellows seals, which enhance flexibility while maintaining superior corrosion resistance and high-temperature stability. The bellows unit eliminates the need for conventional elastomeric components, ensuring reliable secondary sealing in extreme environments. With hydraulically balanced construction, TRISUN’s metal bellows seal minimizes wear on seal faces, extending the lifespan of the seal even under fluctuating pressures and high-pressure conditions.
Each metal bellows seal is available in a single cartridge design for easy installation and maintenance. The use of standard bellows material ensures long-term reliability, while formed bellows technology enhances the seal’s flexibility for better adaptability in various rotating equipment applications. These advanced seals are ideal for industries requiring resistance to harsh chemicals, extreme heat, and wide range of pressure fluctuations.
By incorporating innovative engineering and high-quality materials, TRISUN continues to deliver metal bellows seal solutions that ensure efficiency, longevity, and leak-free operation. Additionally, TRISUN offers multilingual support, allowing customers to select language preferences for better accessibility and seamless global integration.
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